We have plotters and when we print specs the quality is GREAT... We use to have them printed off-site at a high quality printer which was very costly, but since we have been using the HP ink the quality is great and we are saving resources and time with printing them in-house.

i HAVE TRIED ALL KINDS OF REFILLS AND REFURBISHED INK CARTIRIDGES AND HP ORIGINAL CARTRIDGES ARE WORTH THE MONEY. NOW THAT THE CARTRIDGES ARE SEALED AND DON'T DRY OUT IF NOT USED VERY OFTEN (COLOR ONES), THE 130 ML LAST A LONG TIME AND ARE NOSE DEFINITELY COST EFFECTIVE.